Serbia has been cooperating with China in the best manner possible, as the two countries enjoy rock-solid friendship and trust, Serbian President Aleksandar Vučić said ahead of Chinese President Xi Jinping's upcoming Europe visit. 

"That time, we were discovering each other. Now we know that there is a real friendship that's been established. Since then, we [have] developed substantive trust between the top leadership of both countries," Vučić said of the development of bilateral ties since Xi's last visit to Serbia.